$OpenBSD: patch-sandbox_features_gni,v 1.1 2017/03/14 12:18:54 robert Exp $
--- sandbox/features.gni.orig.port	Fri Mar 10 08:40:41 2017
+++ sandbox/features.gni	Fri Mar 10 08:40:48 2017
@@ -11,6 +11,6 @@ import("//build/config/nacl/config.gni")
 use_seccomp_bpf =
     (is_linux || is_android) &&
     (current_cpu == "x86" || current_cpu == "x64" || current_cpu == "arm" ||
-     current_cpu == "arm64" || current_cpu == "mipsel")
+     current_cpu == "arm64" || current_cpu == "mipsel") && !is_openbsd
 
 use_seccomp_bpf = use_seccomp_bpf || is_nacl_nonsfi
